E20-526 Online Practice Questions and Answers
Which operation is performed when an XtremIO Snapshot is created?
A. Pointers to the ancestor metadata are created for the snapshot
B. Space equal to the size of the ancestor is allocated to the snapshot
C. A reserved space is created for new snapshot data
D. A deduplication pass is immediately run against the snapshot
At which point is data compressed when a host sends data to the XtremIO storage system?
A. Inline before data is written to the SSD
B. Once data is written to the storage controller
C. After data is written to the SSDs
D. After data is in SSD cache
What is a characteristic of the XtremIO Snapshot feature?
A. Snapshots may be deleted in any order
B. Snapshots can only be deleted in reverse creation order
C. Only one snapshot may be created or deleted at a time
D. Snapshots can be restored
A storage administrator has 20 TB of storage provisioned to their ESXi cluster from a 10 TB XtremIO storage array. The administrator is concerned about running out of physical capacity on the XtremIO.
Which recommendation will assist the administrator?
A. Enable VAAI TPSTUN
B. Increase the compression ratio on the XtremIO
C. Disable VAAI XCOPY D. Thick provisioned eager zero all VM virtual disks
Which values are required to enter a generic workload into the XtremIO Sizing Tool?
A. Capacity, IOPs, R/W ratio
B. IOPs, I/O size, bandwidth
C. IOPs, bandwidth, latency
D. Bandwidth, I/O size, latency
What are common storage array mechanisms?
A. Log structuring and RAID
B. Post-processing and metadata logging
C. RAID and metadata log structuring
D. Metadata logging and RAID
A storage administrator wants to re-use some of their XtremIO thin provisioned disks attached to a Microsoft Windows 2012 host. However, the administrator notices that "Quick Format" of the drives is taking a long time to complete. This has an impact on the overall performance.
What should be recommended to minimize the performance impact?
A. Disable the I/O elevator feature on the Windows host while formatting
B. Temporarily disable the UNMAP feature on the Windows host during formatting
C. Adjust the execution throttle value on the Windows host
D. Change the disk format to thick provisioned
A customer wants to use the Cinder driver to manage XtremIO storage in an OpenStack environment. What is a potential concern?
A. Compression is not supported
B. Deduplication is not supported
C. Snapshots of snapshots are not supported
D. Volume expansion cannot be reversed
When creating XtremIO volumes for a host, which operating systems will benefit by changing the default logical block size for applications consisting of 4 KB I/Os?
A. Microsoft Windows and RHEL
B. VMware ESX and Microsoft Windows
C. RHEL and IBM AIX
D. Sun Solaris and HP-UX
A customer has a group of applications that need storage which can provide low response times. The total I/O requirements are 75,000 IOPs with a 4 kB block size. They will have 500 LUNs and need to keep 30 daily snapshots of each LUN.
What is the smallest XtremIO configuration that will meet their needs?
A. 1 cluster with 2 X-Bricks
B. 1 cluster with 4 X-Bricks
C. 2 clusters with 1 X-Brick each
D. 2 clusters with 2 X-Bricks each